Nearly two decades after a Connecticut cop was listed as the prime suspect in the decapitation death of his girlfriend and the disappearance of their young daughter, FBI agents are digging at his former house.

An FBI forensics team started sifting through soil Tuesday from the Cromwell yard that once belonged to former Hartford police officer Julio Camacho, the Hartford Courant reported.

Camacho’s 21-year-old girlfriend, Rosa Delgado, and the couple’s 4-year-old daughter, Rosita, vanished in 1997 from a Hartford street corner as they walked to buy diapers.

Delgado's headless, handless body was found a year later in a northern New Jersey lake. The child was never found.

Camacho — the last person to talk to his girlfriend and daughter — was considered the prime suspect in the case and police raided his home in 1998, the same year the 10-year Hartford police veteran resigned from the force.

FBI agents are digging at a home that once belonged to Julio Camacho, the prime suspect in his girlfriend Rosa Delgado's murder and daughter Rosita Camacho's disappearance.

(courant.com)

But the cop was never charged, as investigators at the time said they were awaiting further evidence to build a stronger case. In 2000, prosecutors maintained the charged that Julio Camacho decapitated Delgado, but the suspect still dodged charges.

Camacho has long maintained his innocence, and no other suspects were ever charged.

Since then, the former cop has faced a slew of other legal trouble. In 2000, Camacho was charged with handcuffing and raping two prostitutes while he was on duty in the mid-1990s.

He also pled guilty to raping a woman on the trunk of his car in 1997 and was sentenced to 10 years behind bars for the creepy crime.

Julio Camacho

(NSOPW)

Rosita Camacho

Julio Camacho (l.) is accused in the 1997 disappearance of his 4-year-old daughter, Rosita.

He is currently locked up in Virginia for failure to pay child support for children from pervious relationships.

On Tuesday, the FBI team was seen digging holes in front of Camacho’s former home and sifting through the unearthed soil, a process often used when investigators look for bones.

Cromwell police said on Tuesday that they're working with the FBI in an ongoing investigation. They say this is an isolated case and there's no threat to the public.

FBI officials told the Daily News on Wednesday evening there had been no updates with the investigation.